grep vga /etc/X11/xorg.conf
grep via /etc/X11/xorg.conf
IF no results,
pkg_delete -f /var/db/pkg/xf86-video-vga-[number]
.................................................. .via------------
you need a driver other than those two in the xorg.conf
after the pkg_delete you can do "pkgdb -u"

# IGNORE - Package build should be skipped entirely (e.g.
# because of serious unfixable problems in the build,
# because it cannot be manually fetched, etc). Error
# logs will not appear on pointyhat, so this should be
# used sparingly.